Centered difference
[计] 中心差分
🧩 词语组成解析
a. 居中的\\n[计] 居中的
🗣️ 情景例句
What do you mean?
是什么意思？
Please be quiet.
请安静点。
He no sooner recovers his equilibrium than the next porpoise comes along and hits him another crack.
海龟刚恢复平衡，第二只海豚又冲过来猛击一下。